Seasonal variability of length-weight relationships of arctic grayling (Thymallus arcticus) and siberian dace (leuciscus baicalensis) inhabiting the middle reaches of the Yenisei River, Siberia, Russia

Abstract

The present study proves the presence of seasonal variability of LWRs of Arctic grayling and Siberian dace inhabiting the middle reaches of the Yenisei River. LWRs were estimated using total length (cm) and total body weight (g). The literature data on LWRs of dace and grayling from different regions were compared using log a over b plot. The comparison revealed that seasonal variability of LWRs was wider than the geographic variability for these species. The position of points on the plot can be used to predict the season of sample collection and vice versa.